Public libraries are not run for profit, but they must know their customers. A Pew Research survey
Question:
a) Is there evidence that the percentage of adults with library cards is different between these two groups?
b) Give a 95% confidence interval for the difference.
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Related Book For
Business Statistics
ISBN: 9780321925831
3rd Edition
Authors: Norean Sharpe, Richard Veaux, Paul Velleman
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